#include <sys/movedata.h> void _dosmemputb(const void *buffer, size_t xfers, unsigned long offset);
This function transfers data from the program's virtual address space to MS-DOS's conventional memory space, using only byte (8-bit) transfers. The offset is a physical address, which can be computed from a real-mode segment/offset pair as follows:
offset = segment * 16 + offset;
The xfers is the number of bytes to transfer, and buffer
is a pointer to somewhere in your virtual address space (such as
memory obtained from malloc
) where the data will come from.
None.
not ANSI, not POSIX
unsigned short save_screen[25][80]; _dosmemputb(save_screen, 0xb8000, 80*2*25);
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